Shell using spray technology, corrosion resistance and appearance. Coils arranged in a staggered manner, high heat transfer efficiency, by means of mechanical tube aluminium finned copper tube is securely attached. The product to the factory wiring, all wiring is placed inside a junction box easy installation and maintenance. Drain Pan Central at the bottom with drainage fittings, drainage and reliable. Slot hanger, and ease of installation. U-shaped stainless steel tubes and MgO filled heating pipe, placed in a coil, frost effect is good; According to customer needs long distance blast or explosion-proof motors can be used.